►. We visited the school last spring.
►. I went to school by bike when I was in middle school.
►. China was founded in 1949.(2)在表示时间或条件等的状语从句中代替过去将来时。
►. She told me that she would not go with us if it rained the next day.
►. They would not leave until she came back.
►. My friend promised to marry me once she made her final decision.一般过去时，现在时和过去时的几组差异：(别以为这很简单，下面的差异你不一定明白。)►. Her brother was a chemist.(已去世)
►. Her brother is a chemist.(尚健在)►. That's all I had to say.(话已说完)
►. That's all I have to say.(言之未尽)►. It was so nice to see you.(离别时用)
►. It is so nice to see you.(见面时用)►. Jane did a lot of work this morning.(已是当天下午或晚上)
►. Jane has done a lot of work this morning.(仍是上午)[本句现在完成时，此乃后话!]测试精编I：(用所给动词的正确进态填空)。1. Yesterday I ________ (think) that you were not in Beijing.2. Alice usually ________ (sit) in the front of the classroom, but she ________ (sit) at the back this morning.3. He ________ (tell) the news to us three days ago.4. He________ (begin) to teach Chinese in 1990. 5. she would not telephone me if she ________ (have) no time.测试精编II1. They ________ the trip until the rain stopped.
A. continued B. didn't continue
C. hadn't continued D. would continue2. The local peasants gave the soldiers clothes and food without which they ________ of hunger and cold.(without 在这里表条件，你知道吗?)
A. would die B. will die C. would be dead D. would have died3. It was not until then that I came to know that the earth ________ around the sun.
A. moved B. has moved C. will move D. moves4. When all those present ________ he began his lecture.(重点题)
A. sit B. set C. seated D. were seated5. If I had had time, I would have written to you. But in fact I ________ not.
A. have B. would have C. had D. had had(后设答案，大家不要偷看哦~(*^__^*) 嘻嘻……)KEYS1. thought 2. sits, sat 3. told 4. began 5. had
1. B 2. A 3. D 4. D 5. C